This supplement should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease.

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This scientific independent research is provided by Aisle7 and is for informational use only. GNC provides this information as a service but does not endorse it. Likewise, Aisle7 does not recommend or endorse any specific products.

Alpha Ketoglutarate (AKG) for Sports & Fitness

Why Do Athletes Use It?*

Some athletes say that alpha ketoglutarate (AKG) improves the results of weight-training.

What Do the Advocates Say?*

Advocates point out that AKG is important for cell growth and is used in patients undergoing surgery to help maintain normal muscles' protein synthesis and to protect the heart muscle.

How Much Is Usually Taken by Athletes?

Manufacturers recommend 1 to 2 grams prior to workouts.

*Athletes and fitness advocates may claim benefits for this supplement based on their personal or professional experience. These are individual opinions and testimonials that may or may not be supported by controlled clinical studies or published scientific articles.

The information presented by Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2017.